Drag-and-drop from desktop to Flex app

I am working on a RIA using flex and am trying to implement drag and drop of different types of files into a Flex UI, I know this is possible using AIR but we are trying to do it through Flex in a browser. Trying out options with javascript and active x controls but no success till now.
I am seeking pointers to any sites that implemented this or any direction on cracking this one.
Thanks,
Rakesh Patwari

Thank you for the quick response Jeffry,
Yes, I am facing that issue whichever way we are going in! How about using Javascript/HTML as iframe within flex to get this done?
Just thinking about it...
Thanks again,
Rakesh Patwari

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Don Ricklin, MacBook 1.83Ghz Duo 2 Core running 10.4.9 & Win XP, Pentax *ist D
http://donricklin.blogspot.com/

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[svn:fx-trunk] 10876: Add support for drag-and-drop from Spark List to Spark List.

Revision: 10876
Author:   [email protected]
Date:     2009-10-05 15:20:07 -0700 (Mon, 05 Oct 2009)
Log Message:
Add support for drag-and-drop from Spark List to Spark List.
- List drop related handlers
- LayoutBase APIs
- VerticalLayout DND support
Notes:
- ListSkin is not final.
- Drag-scrolling not yet implemented.
QE notes: Only VerticalLayout works, HorizontalLayout still not implemented.
Doc notes: None
Bugs: None
Reviewer: Deepa
Tests run: checkintests
Is noteworthy for integration: No
Modified Paths:
    flex/sdk/trunk/frameworks/projects/spark/src/spark/components/List.as
    flex/sdk/trunk/frameworks/projects/spark/src/spark/layouts/VerticalLayout.as
    flex/sdk/trunk/frameworks/projects/spark/src/spark/layouts/supportClasses/LayoutBase.as
    flex/sdk/trunk/frameworks/projects/spark/src/spark/skins/spark/ListSkin.mxml
    flex/sdk/trunk/frameworks/spark-manifest.xml
Added Paths:
    flex/sdk/trunk/frameworks/projects/spark/src/spark/layouts/supportClasses/DropLocation.as

Whoops, disregard my question - I just read the spec that indicates drag and drop is scheduled for later work.
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Issue : drag and drop from list control to tree control

Hi,
I was trying a drag and drop from list control to tree control. I have used some sample data to populate list and tree controls .
It is working fine . except one problem ..
Prob : when i drag an item to tree control .. it gets added .. now tree contains (X+1) data in list .. say X is the inital number of nodes in a tree node.
          now if i drag another item from list to last item in the tree node .. i.e at X+1 index. .. it throws null pointer exception.
I am considerably new in flex programming . looking for help from experts ..
Below is my code :
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
                layout="horizontal"
                creationComplete="init()">
    <mx:Script>
        <![CDATA[
            import mx.controls.listClasses.IListItemRenderer;
            import mx.rpc.events.FaultEvent;
            import mx.rpc.events.ResultEvent;
            import mx.utils.ObjectUtil;
            import mx.collections.ICollectionView;
            import mx.core.UIComponent;
            import mx.managers.DragManager;
            import mx.events.DragEvent;
            import mx.controls.Alert;
            import mx.controls.Label;
            import mx.events.CloseEvent;
            private var homePath:String="/home/e311394/dndTest/";
            private var destPath:String="/home/e311394/dndDest/";
            private var eid:String="e311394";
            private var actn:String;
            [Bindable]
            private var cm:ContextMenu;
            private var cmi:ContextMenuItem;
            [Bindable]
            private var dp:ArrayCollection;
            private function init():void
                cmi=new ContextMenuItem("Remove");
                cmi.enabled=true;
                cmi.addEventListener(ContextMenuEvent.MENU_ITEM_SELECT, contextMenuItem_menuItemSelect);
                cm=new ContextMenu();
                cm.hideBuiltInItems();
                cm.customItems=[cmi];
                cm.addEventListener(ContextMenuEvent.MENU_SELECT, contextMenuItem_menuSelect);
                list.contextMenu=cm;
            private function contextMenuItem_menuSelect(evt:ContextMenuEvent):void
                list.selectedIndex=lastRollOverIndex;
            private function contextMenuItem_menuItemSelect(evt:ContextMenuEvent):void
                var loclSelectedRow:Object=list.selectedItem;
                var lostrSelectedMenuItem:String;
                lostrSelectedMenuItem=evt.target.caption;
                if (loclSelectedRow != null)
                    var obj:Object=new Object()
                    obj.label=loclSelectedRow.label as String;
                        //Alert.show(obj.label);
                if (lostrSelectedMenuItem == "Remove")
                    if(loclSelectedRow!=null)
                    var pth:String=homePath.concat(loclSelectedRow.label);
                    //Alert.show(pth);
                    //FlexDnDRemoteService.process(eid,"delete",pth,"-");
                    var coll:ArrayCollection=list.dataProvider as ArrayCollection;
                    if (coll.contains(loclSelectedRow))
                        coll.removeItemAt(coll.getItemIndex(loclSelectedRow));
            public function onTreeDragEnter(event:DragEvent):void
                event.preventDefault();
                DragManager.acceptDragDrop(event.target as UIComponent);
                tree.showDropFeedback(event);
            protected function onTreeDragOver(event:DragEvent):void
                event.preventDefault();
                event.currentTarget.hideDropFeedback(event);
                try
                    var index:int=tree.calculateDropIndex(event);
                catch (e:Error)
                    DragManager.showFeedback(DragManager.NONE);
                    return;
                tree.selectedIndex=index;
                var draggedOverItem:Object=tree.selectedItem;
            public function onTreeDragExit(event:DragEvent):void
                event.preventDefault();
                tree.hideDropFeedback(event);
            private function showAlert():void
                Alert.yesLabel="Move";
                Alert.noLabel="Copy";
                Alert.buttonWidth=70;
                Alert.show("Copy / Move ?", "Confirm", Alert.YES | Alert.NO | Alert.CANCEL, this, alertListener, null, Alert.OK);
            private function alertListener(eventObj:CloseEvent):void
                var result:Boolean=false;
                if (eventObj.detail == Alert.CANCEL)
                    //Alert.show("CANCEL");
                    return;
                if (eventObj.detail == Alert.YES)
                    //Alert.show("YES");
                    result=true;
                else if (eventObj.detail == Alert.NO)
                    //Alert.show("NO");
                    result=false;
                var index:int=tree.calculateDropIndex(treedropevt);
                //Alert.show("Drop Pos" + index.toString());
                /* var treeList:ArrayCollection=tree.dataProvider as ArrayCollection;
                   Alert.show(" index"+index+"Length "+treeList.length);
                   if(index > treeList.length)
                   Alert.show("Returning");
                   return;
                var items:Array=new Array();
                if (treedropevt.dragSource.hasFormat("items"))
                    items=items.concat(treedropevt.dragSource.dataForFormat("items") as Array);
                var parentItem:Object;
                parentItem=getObjectTarget();
                /* if (tree.dataDescriptor.isBranch(tree.indexToItemRenderer(index).data))
                   parentItem=tree.indexToItemRenderer(index).data;
                   else
                   var dropParentPackage:Object = tree.mx_internal::_dropData.parent as Object;
                   Alert.show("HAck"+dropParentPackage.toString());
                   parentItem=tree.getParentItem(tree.indexToItemRenderer(index).data);
                   //Alert.show("Lenght "+ObjectUtil.getClassInfo(parentItem).properties.length);
                //Alert.show("Lenght "+ObjectUtil.getClassInfo(parentItem).properties.length);
                var position:int=0;
                /* if(ObjectUtil.getClassInfo(parentItem).properties.length==0)
                   Alert.show("Returning");
                   return;
                if (parentItem != null)
                    try
                        while (tree.indexToItemRenderer(index).data != parentItem)
                            //Alert.show(tree.indexToItemRenderer(index).data.toString());
                            if (index > 0)
                                index--;
                            //Alert.show("Insiade");
                            position++;
                    catch (e:Error)
                        Alert.show("Catch" + index.toString());
                        return;
                for each (var item:Object in items)
                    var obj:Object=new Object()
                    obj.label=item.label as String;
                    if (parentItem != null)
                        //Alert.show("ADDED");
                        tree.dataDescriptor.addChildAt(parentItem, obj, position++);
                    else
                        //Alert.show("PARENT NULL");
                        tree.dataDescriptor.addChildAt(tree.selectedItem, obj, position++);
                    var spth:String=homePath.concat(item.label);
                    //Alert.show(spth);
                    var dpth:String=destPath.concat(item.label);
                    //Alert.show(dpth);
                    if (result == true)
                        removeItems();
                            //FlexDnDRemoteService.process(eid,"move",spth,dpth);
                    else
                        //FlexDnDRemoteService.process(eid,"copy",spth,dpth);
                    tree.validateNow();
            public function getObjectTarget():Object
                var dropData:Object=tree.mx_internal::_dropData as Object;
                if (dropData.parent != null)
                    return dropData.parent;
                else
                    // if there is not parent (root of the tree), I take the root directly
                    var renderer:IListItemRenderer=tree.indexToItemRenderer(0);
                    return renderer.data;
            public function removeItems():void
                //remove moved elements
                var items:Array=treedropevt.dragSource.dataForFormat("items") as Array;
                var coll:ArrayCollection=list.dataProvider as ArrayCollection;
                for each (var item:Object in items)
                    if (coll.contains(item))
                        coll.removeItemAt(coll.getItemIndex(item));
            private var treedropevt:DragEvent;
            public function onTreeDragDrop(event:DragEvent):void
                treedropevt=event;
                showAlert();
                event.preventDefault();
                tree.hideDropFeedback(event);
            public function resultHandler(event:ResultEvent):void
                Alert.show("Success", "Status");
            public function faultHandler(event:FaultEvent):void
                Alert.show(event.fault.faultString, "Failure");
        ]]>
    </mx:Script>
    <mx:ArrayCollection id="listDP">
        <mx:Object label="File1.dnd"/>
        <mx:Object label="File2.dnd"/>
        <mx:Object label="File3.dnd"/>
        <mx:Object label="File4.dnd"/>
        <mx:Object label="File5.dnd"/>
    </mx:ArrayCollection>
    <mx:Number id="lastRollOverIndex"/>
    
    <mx:ArrayCollection id="treeDP">
        <mx:Object label="/dndDest">
            <mx:children>
                <mx:ArrayCollection>
                    <mx:Object label="sample1.ks"/>
                    <mx:Object label="sample2.ks"/>
                    <mx:Object label="sample3.ks"/>
                    <mx:Object label="sample4.ks"/>
                    <mx:Object label="sample5.ks"/>
                    <mx:Object label="sample6.ks"/>
                </mx:ArrayCollection>
            </mx:children>
        </mx:Object>
    </mx:ArrayCollection>
    <mx:List id="list"
             itemRollOver="lastRollOverIndex = event.rowIndex"
             width="50%"
             dragEnabled="true"
             dataProvider="{listDP}"
             labelField="label"
             allowMultipleSelection="true"
             dragMoveEnabled="false">
    </mx:List>
    <mx:Tree id="tree"
             width="50%"
             dragEnabled="true"
             dataProvider="{treeDP}"
             dragEnter="onTreeDragEnter(event)"
             dragOver="onTreeDragOver(event)"
             dragExit="onTreeDragExit(event)"
             dragDrop="onTreeDragDrop(event)"
             labelField="label"
             liveScrolling="true">
    </mx:Tree>
    <mx:RemoteObject id="FlexDnDRemoteService"
                     showBusyCursor="true"
                     destination="FlexDnD">
        <mx:method name="process"
                   result="resultHandler(event)"
                   fault="faultHandler(event)"/>
    </mx:RemoteObject>
</mx:Application>
Thanks,
Rajiv

Ya , i have searched and have used the same code.
But needed to customize few things like:
stop dnd in same tree
drop some item into a folder ..( onto it ) etc
have achieved the same .. but this issue ..
i think the tree dataprovider (contents internally is not being updated .. only the UI)
any suggestions ?
- Rajiv

Hello, does anyone know why when i drag and drop from the internet,why my images never show up?

hello, does anyone know why when i drag and drop from the internet,why my images never show up?

I'm wanting to drag images from the internet into a folder on my desktop or hard drive. I am used to being able to drag just about any image from any website off the web and into a folder on my old mac, but since I got my laptop, I've noticed I cannot do that. Is it a preference?

Why doesn't the original document I'm dragging and dropping from one folder to another move?

Why doesn't the original document I'm dragging and dropping from one folder to another move?
What's happening is the computer is creating a duplicte of the document and placing it in the new location with a new creation date. The original document I wanted to drag and drop into a new location remains where it started as the "original" document and the new copy has this little arrow protruding up from the lower left of its icon.
At first I thought it was an alias, but it's a copy of the document I thought I was dragging and dropping.
What gives here?
Steve

That arrow indicates it is a linik to the original, though. This happens if you wish to drag files, for which you do not have permissions to do this operation, e.g. from Library or System folder. I am pretty sure you do not accomplish this operation from/to folders like Desktop or Documents; if so, there is a problem with your system.

I am trying to drag and drop one page of a .pdf into another .pdf in Acrobat Reader. I used to be able to drag and drop from one .pdf to another.

I am trying to drag and drop one page of a .pdf into another .pdf in Acrobat Reader. I used to be able to drag and drop from one .pdf to another.

If you could drag and drop pages before, it wasn't in Reader. You no doubt had Adobe Acrobat (Pro or Standard) which shouldn't be confused with Adobe Acrobat Reader. They recently added Acrobat to the name of Adobe Reader so the confusion about which product you had and/or have is understandable.

I can't drag and drop from a data CD I recorded

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I constantly update, backup, repair permissions, and do other maintenance so everything is up to date. I have noticed this behavior just since I started to use the program called Audiobook Builder. I am (and have always used) a non-admin user account. When this started a few months ago it seemed to go away with a restart, permission repair, or a logout but now it seems permanant. I checked user permissions on my home folder - I have not added any software since adding Audiobook Builder. Any idea's? I read something about trashing a com.apple pref but didn't try that.
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wes

dj_paige wrote:
While the programming of course could be done, the idea of a function that performs on original unprocessed images seems to violate the whole idea of what Lightroom was designed to be. At least that's my opinion. Of course, the idea that Adobe should do this programming for a relatively small number of people (you're one of a very few people to ask for this, that I have read) seems to be something that isn't going to happen.
I agree, I can't see much reason for drag-and-drop to drag the unprocessed image - in other words, an image that isn't the one that you see when you drag and drop. I can see that just filling this forum with "why the heck does it do that????????" posts. I could be wrong, but I suspect that Adobe won't do that.
But if you do want to drag-and-drop the original unprocessed image, you can do it very easily now. Right click the image, choose "show in Explorer", and then drag-and-drop from Explorer.

I can't drag and drop from windows explorer into my ipod on itunes. Any suggestions?

Hi,
I manage my music/podcast library on my Vista PC using windows explorer because I don't like how iTunes does it. Then today I can no longer drag and drop from explorer onto my iPod in iTunes all I get is a circle with a line through it meaning "iTunes says no." Any suggestions?
Ta.

You will need to Sync your iPad and all Music/Albums Selected will transfer over from iTunes..
iOS: Syncing your data with iTunes
http://support.apple.com/kb/HT1386

Drag and drop from Lightroom into Premiere doesn't work in Windows

I recently switched from OSX to Windows and noticed that in Windows, I'm unable to drag and drop from LIghtroom into Premiere. In OSX, it worked fine.
I do this a lot because it's a time saver. I basically use lightroom to find the photo or video clip I need for my editing project and then just drag in right on to the Premiere timeline. Now I have to do the extra step in Lightroom of "show in explorer", then drag the file from explorer to Premiere. Not really a big deal but just curious why it works in OSX and not Windows.
I'm running latest Windows 8.1, Lightroom 5.4, Camera Raw 8.4, and Premiere Pro CC 7.2.2 (33)
-Pete

Hi Pete,
You can obtain scripts here:
http://www.robcole.com/Rob/ProductsAndServices/MiscLrPlugins#MiscScripts
You'll have to edit lua code to adapt for Premiere. Not that hard really (e.g. clone, then change the script name and path to executable..), but may be too intimidating for some folks. If you are one of those folks, go for the plugin instead - it's usable via GUI - no lua code - can probably accomplish the same thing.
http://www.robcole.com/Rob/ProductsAndServices/OpenInWhateverLrPlugin
Let me know (outside the forum please) if problems - thanks,
Rob

Drag-and-drop from desktop to Flex app

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